Would the 18/15 setup work well with H&R Sports springs? No rubbing issues?

The 18/15 spacer setup would work if you have similar to stock OEM alignment settings and stock Michelin tires. Even then, it's pushing it and likely to rub with the 18/15, because it's quite an aggressive setup. If you're worried that you might rub, the 15/12 setup is a bit more conservative.

i order all my parts from eas;
Im running 18/15 RD sport springs OEM 19" the rear do rub at the edge; Highway speed bump rubs,(only 1 driver in car,what if there is some passengers...?LOL)
And the front, while i turn the wheel all the way to Left or Right it make a POP sound in the front fenders, my guess is its rubbing against the fender? dont like my car makes ricey sound...damn went off the limit..now i need to change some things help plz.

i order all my parts from eas;
Im running 18/15 RD sport springs OEM 19" the rear do rub at the edge; Highway speed bump rubs,(only 1 driver in car,what if there is some passengers...?LOL)
And the front, while i turn the wheel all the way to Left or Right it make a POP sound in the front fenders, my guess is its rubbing against the fender? dont like my car makes ricey sound...damn went off the limit..now i need to change some things help plz.

Turn the wheels completely to left or right and inspect for any rubbing on the inner fenderwells.

Do keep in mind that you are running springs with the lowest drop (RD Sport) along with the most aggressive spacer setup. Clearance will be minimal during braking/wheels turning.

2011 ZCP E92 Daily Driver, wanted to run 18f/15r tires i have are 245/35/19 and rears 265/35/19 I will be dropping it on coilovers KWv3, almost as low as i can go, i am running a challenge lip so i will be somewhat conservative with the drop. Would you guys recommend 18/15?

2011 ZCP E92 Daily Driver, wanted to run 18f/15r tires i have are 245/35/19 and rears 265/35/19 I will be dropping it on coilovers KWv3, almost as low as i can go, i am running a challenge lip so i will be somewhat conservative with the drop. Would you guys recommend 18/15?

18/15 is quite aggressive with the ZCP, and would likely rub on full lock especially if you are lowering the car. I would recommend the 15/12 setup if you want to avoid rubbing, but if you are not worried about rubbing then the 18/15 would work for you

ZCP Only:
Just remember; lowered with a 10mm+ tire (over stock size) and anything over a 10mm spacer, you will rub. With people in the car, 10mm+ up-size tire and lowered with 10mm spacer, you will rub.

Typically with the OEM 19" wheels, 15/12 is the most common setup. Some people have gotten away with 18/15 but it is quite aggressive and may rub, especially if you're lowered. Give us a call if you have any other questions or need advice!